/**
 * Copyright (C) 2011 Andrew C. Love (DNC) <dnc.app.sup@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.dnc.cloak.framework.util.file;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;

public class FileLoader {	
  
    private InputStream inputStream = null;

    public FileLoader(File file) throws FileNotFoundException {
        this(file.getPath());
    }
    
    public FileLoader(String name) throws FileNotFoundException {
    	
        inputStream = getResourceAsStream(name);
        
        if (inputStream == null) {
        	inputStream = new FileInputStream(name);                      
        }    
        
    }
    
    public FileLoader(String name, boolean useClassLoader) throws FileNotFoundException {
    	
        if (useClassLoader) {
            inputStream = getResourceAsStream(name);
        }
        else {
        	inputStream = new FileInputStream(name);                      
        }
        
    }
    
    public byte[] getByteArray() throws IOException {
    	
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream(1024);
        byte[] bytes = new byte[512];
     
        int readBytes;
        
        while ((readBytes = inputStream.read(bytes)) > 0) {
            outputStream.write(bytes, 0, readBytes);
        }
     
        byte[] byteData = outputStream.toByteArray();
     
        inputStream.close();
        outputStream.close();
     
        return byteData;
        
    }    
    
    
    public InputStream getInputStream() {
		return inputStream;
	}

    static public InputStream getResourceAsStream(String name) {
    	
        name = name.replace('\\', '/').startsWith("/") ? name.replace('\\', '/').substring(1) : name.replace('\\', '/'); 
        return Thread.currentThread().getContextClassLoader().getResourceAsStream(name);
        
    }
    
}
